How do you add username colour chooser?

[Lynne]

First thing you should learn to do is use the search. Best thing to do is search on a term in "all mods" "titles only". If you search on the term "color", you'd find this - Users Choose Username Font/Color Posts - and several other mods which may/may not be of interest to you.

Second thing to do is get a test site set up. I find a test site invaluable when I want to make a change on my live site because I *always* want to test it on my test site first.